How the Weight Trick Is Supposed to Work
The theory: secret rare figures sometimes include additional accessories, larger packaging inserts, or different materials that make the box marginally heavier than standard editions. By weighing multiple boxes from the same case, you identify the outlier — which should be the secret rare.
This approach has genuine precedent with some blind box brands where secret figures include significantly different packaging. The question is whether it applies to Labubu specifically.
The Reality with Labubu
Labubu's production quality and packaging consistency make meaningful weight variation unlikely between standard and secret rare figures. Pop Mart uses consistent packaging weights across a case, and the secret rare is typically just a different colorway of an existing figure — not a figure with substantially more material.
Collector communities that have systematically weighed Labubu cases report inconsistent results. Some claim slight success; most report no reliable correlation between weight and rarity. The margin of difference — if any — is small enough to be overwhelmed by normal manufacturing variation.
What Actually Works Better
A more reliable approach is case-buying. A standard Labubu case contains a fixed number of boxes with a guaranteed distribution including one secret rare per case. Buying an entire case (or splitting one with another collector) guarantees you'll get the secret rare — at the cost of getting all the common figures too.
For collectors who want a specific secret rare figure without buying a full case, the secondary market is more efficient than weight-sorting. The secret rares appear on resale platforms at premiums, but paying that premium costs less than buying multiple cases hoping to land it.
Should You Try the Weight Method?
If you're at a store with loose boxes and a sensitive scale is available, it costs nothing to try — but don't rely on it. The entertainment value of the blind box experience arguably outweighs the marginal benefit of trying to game it.
The weight method is better documented as working for some other blind box brands with different packaging structures. For Labubu specifically, the evidence is too inconsistent to recommend it as a reliable strategy.